ensure maintenance is carried out by a competent person (someone who has the necessary skills, knowledge and experience to carry out the work safely) 1  maintain plant and equipment regularly â use the manufacturerâs maintenance instructions as a guide, particularly if there are safety-critical features.
HDPE (High Density Polyethylene). 3/4 HDPE will cost about $45.00 for 100' ($0.45/ft), so depending on the amount required can be much cheaper than the previous options. HDPE is used by many municipalities as water supply lines, so it has been tried and tested in underground applications.
1 According to Adobe.com, the prices range from $9 to $39 per month, depending on the amount of storage and which Photoshop version you want. On average, be prepared to spend anywhere from $50 to as much as $450 for Adobe Photoshop if you want to buy the software outright. 2  Reference the chart below to see the price range for specific packages.